Christie 163-166104-XX Zoom Long Throw Lens Overview: M 4K25 RGB Compatibility

Christie Factory-Original Lens 163-166104-XX Zoom is a factory-original optical accessory for Christie projectors. It is a long-throw lens with a throw ratio of 1.60-2.35:1. The factory compatibility list covers one model. Before installation, simply verify the projector model and panel size; there is no need to make do with mounting adapters. The value of a factory-original lens lies not in the additional rows of specifications, but in the fact that it is calibrated at the factory to the optical path and mount of the projector series. Once installed, the image circle, edge illumination, and focusing travel all meet the design specifications, eliminating the need to compensate for image quality with keystone correction.

1. Lens Specifications

Brand	Christie (Christie)
Lens Model	163-166104-XX Zoom
Throw Ratio	1.60-2.35:1
Product Type	Long Throw
Compatible Models	1 projector
Warranty	12 months; damage not caused by the user may be handled through after-sales service, based on the date shown on the shipping invoice

The above specifications are based on the manufacturer's official specifications. For mechanical dimensions, flange distance, and mount type not listed in the table, please contact us with your projector model. Ordering based solely on a similar model carries the risk that the lens will not fit.

2. Throw Ratio and Installation Distance

A throw ratio is the ratio of installation distance to image width. This factory-original lens is a zoom lens (1.60-2.35:1), so a given image size corresponds to a range of installation distances. The lens can focus at any distance within this range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	approx. 3.44 – 5.05 m
120 inches	2.58 m	approx. 4.13 – 6.06 m
150 inches	3.22 m	approx. 5.16 – 7.58 m
200 inches	4.30 m	approx. 6.88 – 10.11 m

These figures represent the clear distance from the front surface of the lens to the screen and do not account for ventilation or cabling space behind the projector. They are calculated for a 16:10 image; actual distances should be verified on site and according to the manufacturer's manual.

Image quality varies between the two ends of the zoom range: the image is brighter and the edges slightly softer toward the close end, while the edges are sharper and brightness is slightly lower toward the far end. Where the venue allows, use the middle of the range. After installation, first find the sharpest position using the focus ring, then fine-tune the lens shift.

3. Compatible Models (1 projector)

The table below is taken from the manufacturer's compatibility list. Brightness and resolution are populated from the model database; where data is unavailable, “—” is shown rather than estimated values.

Model	Brightness	Resolution
M 4K25 RGB	—	—

To determine whether a model outside the list is supported, send us photos of the projector nameplate and existing lens for verification. Platforms from the same generation often share a mount, but ordering based on a similar model is not worth the risk.

Throw Ratios by Model Series

The rated throw ratio varies by series when the same 163-166104-XX Zoom lens is used. Select the value based on the series of the actual projector.

Model Series	Throw Ratio
—	1.60-2.35:1

4. Three Checks Before Replacement

• Confirm the projector chip and resolution. The factory-original lens is designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or edge light loss.
• Calculate the installation distance first. This lens has a rated throw ratio of 1.60-2.35:1. Use the table in Section 2 to apply the calculation to your venue dimensions. A fixed-focus lens offers no adjustment margin, and even a zoom lens should allow for 10–20 cm at both ends.
• Verify the mount and locking mechanism. The factory-original lens is calibrated to the mount of this projector series. After installation, you must hear the lens click into its locked position. A skewed image or soft edges are usually caused by incomplete locking rather than a problem with the lens itself.

If you are unsure, take one photo of the projector nameplate and one of the existing lens nameplate, then send them to us. Verification against the actual hardware is the most reliable approach.